There is a good novel that could have come from the outlined bullet points of this book. Merrick is a powerful witch in new Orleans who is related to the Mayfair family and is a member of the Talamasca. She is very good at contacting the dead. She knows David the vampire from his days in the Talamasca. Angsty, sensitive Louis wants to contact his long lost Claudia to be sure she is at peace. Gentlemanly, shrewd David somewhat reluctantly brings these two people from his two different worlds together to help Louis get over this obsession. Lestat is asleep for some reason. And Merrick may have her own agenda during all of this....
For those who have read the vampire chronicles and the Mayfair witch books, this could have been a fun and interesting off-shoot. And it is not terrible as a book, it just kind of falls flat. Nothing new or very interesting happens. Merrick is kept too mysterious to really flesh out as a character. There is a lot of flowery description of New Orleans and seductive hips and bosoms and skirts and long tapering fingers and stuff. Which is a given with any Anne Rice novel whether you like it or not, but this one has too much description and not enough plot. Things speed up and get a bit interesting in the final chapters.
Basically a middle-of-the-road Anne Rice Novel